A Caltech Library Service

High-contrast Imaging Study on the Candidate Companions Around the Star AH Lep

Brown Sevilla, Samantha B. and Cantalloube, Faustine and Brandner, Wolfgang and Feldt, Markus and Henning, Thomas and Maire, Anne-Lise and Schlieder, Joshua and Boccaletti, A. and Bonnefoy, M. and Chauvin, G. and Desidera, S. and D'Orazi, V. and Gratton, R. and Keppler, M. and Lagrange, A-M. and Langlois, M. and Mesa, D. and Meyer, M. and Samland, M. and Schmidt, T. and Vigan, A. (2019) High-contrast Imaging Study on the Candidate Companions Around the Star AH Lep. Research Notes of the AAS, 3 (7). Art. No. 100. ISSN 2515-5172. doi:10.3847/2515-5172/ab336d.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


AH Lep (R.A._(J2000) = 05 34 09.16, decl._(J2000) = −15 17 03.18) is a young, nearby, solar-type star (G2V). Gaia DR2 and BANYAN Sigma provide a 99.9% probability of the star belonging to the Columba moving group (Zuckerman et al. 2011), yielding an estimated age of 42^(+6)_(-4) Myr (Bell et al. 2015). It has a parallax of p = 17.26 mas, corresponding to a distance of d = 57.9 pc (Gaia Collaboration et al. 2018). The star has been reported to have variable photospheric and X-ray emission (e.g., Burleigh et al. 1998; Cutispoto et al. 2003).

Item Type:Article
Related URLs:
URLURL TypeDescription
Maire, Anne-Lise0000-0002-2591-4138
Schlieder, Joshua0000-0001-5347-7062
Boccaletti, A.0000-0001-9353-2724
Bonnefoy, M.0000-0001-5579-5339
D'Orazi, V.0000-0002-2662-3762
Vigan, A.0000-0002-5902-7828
Additional Information:© 2019 The American Astronomical Society. Received 2019 July 12; Accepted 2019 July 17; Published 2019 July 23. The authors thank the ESO Paranal Staff for support in conducting the observations and Philippe Delorme, Eric Lagadec, and Nadège Meunier (SPHERE Data Center) for their help with the data reduction. SPHERE is an instrument designed and built by a consortium consisting of IPAG, MPIA, LAM, LESIA, Laboratoire Lagrange, INAF—Osservatorio di Padova, Observatoire astronomique de l'Université de Genève, ETH Zurich, NOVA, ONERA, and ASTRON, in collaboration with ESO. SPHERE was funded by ESO, with additional contributions from the CNRS, MPIA, INAF, FINES, and NOVA. SPHERE also received funding from the European Commission FP6 (RII3-Ct-2004-001566 for 2004–2008) and FP7 (226604 for 2009–2012, and 312430 for 2013–2016) as part of OPTICON.
Funding AgencyGrant Number
European Southern Observatory (ESO)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Max Planck Institute for Astronomy (MPIA)UNSPECIFIED
Istituto Nazionale di Astrofisica (INAF)UNSPECIFIED
Nederlandse Onderzoekschool voor de Astronomie (NOVA)UNSPECIFIED
European Research Council (ERC)RII3-Ct-2004-001566
European Research Council (ERC)226604
European Research Council (ERC)312430
Subject Keywords:Direct imaging; Substellar companion stars; Astrometry
Issue or Number:7
Record Number:CaltechAUTHORS:20190723-111232541
Persistent URL:
Official Citation:Samantha B. Brown Sevilla et al 2019 Res. Notes AAS 3 100
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97357
Deposited By: Tony Diaz
Deposited On:23 Jul 2019 20:20
Last Modified:16 Nov 2021 17:31

Repository Staff Only: item control page